/**
 * @Author Big_white
 * @Date 2021/11/11
 */
public class DVDPlayer {

    //使用单例模式，使用饿汉式
    private static DVDPlayer instance=new DVDPlayer();

    public static DVDPlayer getInstance(){
        return instance;
    }

    public void on(){
        System.out.println("dvd on");
    }

    public void off(){
        System.out.println("dvd off");
    }

    public void play(){
        System.out.println("dvd is playing");
    }

    public void pause(){
        System.out.println("dvd pause...");
    }

}
